Night Time Heartburn
There a number of advantages in sleeping on your left side, one of which is reducing the likelihood of night time heartburn. This is due to the way the stomach is positioned in relation to the lower esophageal sphincter (LES), which controls food passing from the esophagus into the stomach. When working properly, the LES keeps the contents of the stomach, including acidic digestive juices, from back-flowing into the sensitive esophagus. This causes the burn of heartburn.